Home / 15,185.93-20,956.95-8,471.51

Finding the Fourth Proportional to 15,185.93, 20,956.95 and 8,471.51

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Solution

The fourth proportional to 15,185.93, 20,956.95 and 8,471.51 is: 11,690.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.93 : 20,956.95 = 8,471.51 : x
  2. Step 2: Convert to fraction form
    15,185.93/20,956.95 = 8,471.51/x
  3. Step 3: Cross multiply
    15,185.93x = 20,956.95 × 8,471.51
  4. Step 4: Simplify right side
    15,185.93x = 177,536,906.71
  5. Step 5: Solve for x
    x = 177,536,906.71/15,185.93
  6. Step 6: Final answer
    x = 11,690.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.